28906830 has 24 divisors (see below), whose sum is σ = 75157992. Its totient is φ = 7708464.

The previous prime is 28906819. The next prime is 28906831. The reversal of 28906830 is 3860982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28906831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160504 + ... + 160683.

It is an arithmetic number, because the mean of its divisors is an integer number (3131583).

Almost surely, 2^28906830 is an apocalyptic number.

28906830 is an abundant number, since it is smaller than the sum of its proper divisors (46251162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28906830 is a wasteful number, since it uses less digits than its factorization.

28906830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321200 (or 321197 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28906830 is about 5376.5072305355. The cubic root of 28906830 is about 306.9023091717.

The spelling of 28906830 in words is "twenty-eight million, nine hundred six thousand, eight hundred thirty".